ERP connector update required.
ERP connector release TBD.
Often the B2B customers know what the standard delivery time is for products that are in stock. Sometimes it is customer depended if shipments are split or not, and the customer also knows in that case if they want the shipment to be spit or not, meaning that they know how to interpret the information of availability.
Showing the stock message in the shopping cart will give them a clear and transparant overview of their order, setting proper expectancies on possible delivery.